Leos oil field supply can deliver enough pipe valves to valo oil company to fill their storeroom in 8 hours. valo oil compamy can deplete the store room of the pipe valves in 12 hours. starting with an empty storeroom, how long will it take leo's oilfield supply to fill it if valo is using the pipe valves at the same time?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in